All signs point to heater core

My blazer is leaking antifreeze behind the passenger side wheel. There is a mist and the smell of antifreeze inside. There is no leak inside on the floor and the heat does work. Is the heater core my problem? Any help would be appreciated.

Yes.

Before condemning the heater core, inspect the heater hoses that run to the firewall. I leaking hose can allow coolant to run inside and give the impression of a faulty core.

And if you are running old green coolant.
Do not breath in them fumes.
The fumes have been known to cause kedney and lung problems.
Keep the windows down and well vented and fix as soon as you can..

And if you are running old green coolant.
Do not breath in them fumes.
The fumes have been known to cause kedney and lung problems.
Heep the windows down and well vented and fix as soon as you can..
MT is right. my wife had a grand mal seizure after riding in a vehicle with a leakey heater core. automatic drivers liesence suspension for 6 months and she has CDL so no paycheck either. non toxic blends are available and work well.